Luke rushworth



L. RUSHWORYTH & I. M. LWSEY. SPEED GOVERNOR.

No. 494,894. Patentedpr. 4, 1893. Eay. @7.2.

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L. lRUSEUNORTH 8v I. M. LIVSEY.

SPEED GOVERNOR.

No. 494,894. Patented Apr. 4, 1893.

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UNITED STATES PATENT OFFICE.

LUKE RUSHWORTH, OF DROYLSDEN, AND ISAACV MOORHOUSE LIVSEY, OF ASHTON-UNDER-LYNE, ENGLAND.

SPEED-GOVERNOR.

SPECIFICATION forming part of Letters Patent No. 494,894, dated April 4, 1893. Application filed Getoher 21,1891* Serial No. 409,459. (No model.) Patented in England November 28,1890,No.19|392.

To all whom t may concern.-

Beit known that We,LUKE RUsnWon'rH, of Drcylsden, and Isaac MooRHoUsE Livsnv, of Ashton-under-Lyne, both in the county of Lancaster, Kingdom of Greatritaimsubjects of the Queen of Great Britain, have invented new and useful Improved Means for Governing or Regulating the Speed of Steam or other Motive-Power Engines, (for which We have obro tained provisional protection in Great Britain, No. 19,392, dated November 28,1890,)of which the following is a specification.

Our invention for governing or regulating the speed of steam or other motive power enr 5 gines consists principally in employing, in

lieu of the ordinary governor arms, an oscillating arm or pendulum which by reason ot' the centrifugal force, not only rises and falls but also lengthens and shortens and thus 2o greatly increases the sensitiveness of the governor. We attain this object by the means illustrated in the accompanying two sheets of drawings, in which- Figure l, Sheet l, is an elevation and Fig.

z 5 2, a sectional elevation of the governor. Fig. 3, Sheet Il, is an elevation and Fig. 4, a plan of the governor stand, with the connection to the inclined toothed plate, bar, or spindle and the compound slide with its catches.

Similar letters refer to similar parts throughout the several views.

Referring to Figs. 1 and 2, Sheet I, a is the top portion of the governor pillar. Thev main spindle b,which is caused to revolve in the 3 5 usual manner, is partly a tube, and has afulcrum c situated outside its center of rotation, to which fulcrum c is attached, preferably by means of a collar cx, a tubular pendulum d extending across the center of rotation. This 4o tubular pendulum ol, has a piston e attached thereto at or near its lower extremity, on` which is arranged to slide a ball or cylinder f which incloses the piston c. This sliding ball or cylinder f is secured to one or more rods g and is under the influence of a spiral spring or springs h, placed .on the rod or rods g, the lower end of which spiral spring h bears against the piston e and the upper end against a bush kx and rendered adjustable on the rod 5o g by means of nuts gx, for the purpose of regulating the movements of the ball or cylinder f. The latter is filled with liquid of the consistency required,and is controlled thereby iu the passing of the liquid from one side to the other side ot' the piston e thus giving 55 an automatically lengthening and shortening pendulum, as the altering conditions of load on the engine may require. The tubular pendulum d, at or near the center ot rotation, through the medium of the collar cx and 6o the pivot bar i, forms a connection with a dash pot piston j situated and Workinginside the lower end of the main tubular spindle b. Through and by this connection, either from the upper end la atjX of the dash pot piston connection, or from the collar and lever attachment Z formed on the lower end of the counterpoise Weight m, which slides on the main tubular spindle?) and is connected thereto by means of the cross head X and rods bx, 7o the motions and variations of the pendulum are transmitted to a slide 'n by means of the chain nx, as shown in Figs. 3 and el, Sheet ll. The slide fn. is furnished with toothed catches o, o, and adapted to move vertically on another slide p fixed to a bar or rod s, which is rendered laterally movable and connected to the throttle valve orcut ott gear of the engine.

In front of the slide n is arranged to reciprocate laterally, preferably by an eccentric r, a 8o rod or bar rx furnished with arms gx carrying a diagonal toothed spindle q positioned between the catches o, o. It the engine runs at a normal speed,the catches o, o, of the slide An allow the diagonal spindle gj to laterally reciprocate Without coming into contact with them. On an excess of speed taking place, the slide n is lowered,through the medium of the governor, toward the lower end of the diagonal spindle q and brings one of its catches 9o o into contact with the spindle q, which moves the slide ln, and the latter the slide p simultaneously in a lateral direction and thereby causes the bar or rod s to operate the throttle valve or valve gear of the engine and cut o steam as may be required. On a decrease of speed taking place, the slide n is raised to- Ward the upper end of the spindle q and thus comes into contact with the other of the catches o, o, which moves the slides n and p roo in a reverse direction and causes bar or rod s to operate the throttle valve or gear and admit steam as may be required.

What We claim as our invention, and desire to secure by Letters Patent, is-

1. In means for governingor regulating the speed of steam or other motive power engines, the tubular pendulum with a ball or cylinder which automatically lengthens and shortens, and is turned or regulated bymeans of a screw adjustment in combination with a rod and spring and controlled in its movements by a liquid contained in the ball or cylinder.

2. In means for governing or regulating the speed of steam or other motive power en- 

